.container{
    width: 1300px;
    margin: auto;
}

.hide{
	display: none;
}
.none{
    height: 66px;
}

/* intro------------------------------------------------------ */
/* nav-------------------------------------- */
.nav{
    z-index: 1000;

    height: 66px;
    /* background-color: #8090a7; */
    background-color: rgba(41,60,90,0.9);
    width: 100%;
    position: fixed;
    top: 0;
    /* background-image: linear-gradient(blue,#fff); */
}
/* to right,#eff5f9,#4072b8 121px*/

.nav-logo{
    width: 73px;
    height: 70px;

    float: left;
    margin-left: 46px;
    margin-right: 32px;
    margin-top: 5px;
}

.nav-login{
    width: 100px;
    float: left;

    margin-top: 20px;
    text-align: center;

    color: #fff;
    /* 怎么跳转？？？ */
}
.nav-login-{
    width: 90px;
    float: left;

    margin-top: 20px;
    margin-left: 10px;
    text-align: center;

    color: #fff;
    /* 怎么跳转？？？ */
}
.nav-list{
    float: right;
    display: flex;
    justify-content: space-between;
}
.li{
    width: 94px;
    height: 66px;

    color: #fff;
    /* #e1eff8 */
    display: flex;

    /* line-height: 20px; */
    /* margin-top: 20px; */
    /* 不合理的居中办法 */

    /* text-align: center; */
    justify-content: center;
    align-items: center;
}
/* 搜索框 -------------------------------------*/
.search-box{
    height: 720px;
    width: 1000px;
    margin: auto;
    padding-top: 20%;

    /* position: absolute; */
    /* margin-top: 200px;
    top: 20%; */

}
.search-cate{
    height: 52px;
    width: 200px;
    margin-bottom: 10px;
    border-radius: 10px;

    background-color:rgba(41,60,90,0.9);
    /* #0b3c5e */
    color: #fff;
    display: flex;
    justify-content: space-around;
    align-items: center;
}

.category{
    height: 30px;
    width: 60px;

    font-size: 16px;
}

.search-bar{
    width: 838px;
    margin: auto;
    height: 52px;

    border-radius: 10px;
    font-size: 20px;
}
.search-btn{
    width: 100px;
    height: 52px;

    background-color: rgba(41,60,90,0.9);
    color: #fff;
    font-size: 20px;
    border-radius: 10px;
}


/* bg----------------------------------------------------------------------------------------- */

/* my----------------------------------------- */
.my{
    /* height: 1372px; */
    height: 800px;
    width: 1050px;
    margin: auto;

    /* margin-top: 50px; */

    background-color: #fff;
    border-radius: 10px;
    border-bottom: 1px solid grey;
}


/* 未读消息 */
.my-messgage{
    width: 800px;
    margin: auto;
    /* height: 100px; */

    margin-top: 20px;
    background-color: #cccccc;
    border-radius: 10px;

    position: relative;
}
.my-messgage-header{
    margin-left: 20px;
    border-bottom: 1px solid black;

    position: relative;
}

.my-messgage-main{
    margin-left: 50px;
    position: relative;
    /* margin-top: 20px; */
}
/* 一条 */
.piece-mes{
    width: 750px;
    height: 40px;
    position: relative;
    
}
.piece-mes-main{
    position: absolute;
    left: 30px;

    margin-top: 10px;
}
.btn-read{
    width: 30px;
    height: 30px;
    border: none;
    border-radius: 50%;
    color: #fff;
    background-color: #df3636;
    position: absolute;
    right: 50px;
    top: 5px;

    cursor: pointer;
}

/* 借阅 */
.my-bookshelf{
    /* height: 358px; */
    /* width: 1050px; */

    margin-left: 20px;
    /* border: 1px solid gray;
    border-radius: 10px; */
    
    /* justify-content: space-around; */
}
.my-bookshelf-header{
    width: 1000px;
    margin-bottom: 20px;
    border-bottom: 1px solid black;
    
}
.my-bookshelf-main{
    width: 1000px;
    height: 300px;
    /* display: flex; */
    /* background-color: #df3636; */
}
.book-block{
    width: 150px;
    height: 250px;
    overflow: hidden;
    background-color: gray;
    border-radius: 5px;
    margin-top: 20px;
    float: left;
    margin-left: 30px;
}
.book{
    width: 150px;
    height: 200px;
    background-color: #fff;
}
.btn-huan-box{
    width: 150px;
    height: 50px;
    /* background-color: bisque; */
    display: flex;
    justify-content: center;
    align-items: center;
}
.btn-huan{
    height: 30px;
    width:50px;
    border-radius: 5px;
}
/* 历史 */
.my-history{
    /* height: 358px; */
    height: 200px;

    margin-left: 20px;
    /* border: 1px solid gray;
    border-radius: 10px; */
}
.my-history-header{
    width: 1000px;
    margin-bottom: 20px;
    border-bottom: 1px solid black;
    
}
#histroy{
    color: gray;
}
/* hot-list----------------------------------------- */
.hot-list{
    width: 1050px;
    height: 480px;
    /* 408 */
    margin: auto;
    /* margin-top: 50px; */
    

    background-color: #fff;
    border-radius: 10px;

    border-bottom: 1px solid grey;
}

.hot-main{
    width: 1050px;
    height: 408px;

    display: flex;
    justify-content: center;
    align-items: center;
}

/* book-list---------------------------------------------------- */
.book-list{
    width: 1050px;
    height: 600px;
    margin: auto;
    /* margin-top: 50px; */

    background-color: #fff;
    border-radius: 10px;

}
.book-more{
    height: 50px;
    width: 40px;
    float: right;
}

/*图书库书籍种类---------------------------------------------------*/
.book-box{
    width: 1000px;
    height: 408px;
    background-color: #21314c;
}
.book-box .book{
    display: flex;
    align-items: center;
    width: 1000px;
    height: 254px;
    background-color: #fff;
    border-bottom: 2px solid #e0e2e2;
    border-top: 2px solid #e0e2e2;
}
.book .pic {
    width: 275px;
    height: 226px;
    border-right: 1px solid #bdd1df;
}
.book .content {
    width: 758px;
    height: 254px;
}
.book .btn {
    width: 167px;
    height: 254px;
    text-align: center;
    line-height: 254px;
}
.btn button{
    width: 85px;
    height: 44px;
    background-color: #df3636;
    border: none;
    cursor: pointer;
    border-radius: 5px;
    color: #fff;
}
/* user-message----------------------------------------- */
.user-message{
    width: 1050px;
    margin: auto;
    /* margin-top: 50px; */
    margin-bottom: 20px;

    background-color: #fff;
    border-radius: 4px;

}

.user-main{
    width: 900px;
    margin: auto;
}

.user-input{
    width: 900px;
    height: 200px;
    margin: auto;
    margin-top: 20px;
    margin-bottom: 20px;

    background-color: #fff;
    border-radius: 10px;

    font-size: 20px;
}
p{
    display: flex;
    justify-content: center;
}
.user-btn{
    width: 300px;
    height: 50px;
    border-radius: 10px;
    background-color: #21314c;
    color: #fff;
    margin-left: 80px;
    margin-bottom: 20px;
}
/* ------------------------------------------------------------------------------------------- */
/* footer----------------------------------------------- */
/* .footer{
    height: 200px;
    background-color: #21314c;
    color: #fff;
    font-size: 50px;
    margin-top: 50px;

    #0984e3
} */
footer {
    /* width: 1204px; */
    margin: 0 auto;
    background-color: #21314c;
    color: #fff;
    padding-bottom: 20px;
  }
  .footer-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin: 20px 0px;
  }
  .footer-item span {
    height: 20px;
    line-height: 20px;
  }
  .footer-item ul {
    display: flex;
    justify-content: flex-end;
  }
  .footer-item ul li {
    padding: 10px;
  }
  .footer-item ul li a {
    color: #fff;
  }
  .footer-item ul li a:hover {
    color: #bdd1df;
  }
  .footer-item:last-child {
    border-top: 2px solid #fff;
  }

  .toTop {
    width: 2vw;
    height: 2vw;
    position: fixed;
    right: 5%;
    bottom: 15%;
    background-image: url("../img/toTop.png");
    background-repeat: no-repeat;
    background-size: 100%;
    z-index: 50;
    border-radius: 25px;
    border: none;
    background-color: rgb(248, 249, 250);
  }